1. 2-Variable Unit Conversions
honors

2. Review: One-step single variable
Convert 6.2 x10-8 decimeters to meters.
Convert years into days.

3. Review: multi-step single variable
Convert micrograms into kilograms.
Convert 27 inches into miles.

4. 2-variable conversions
--We are converting a unit on the top AND a unit on the bottom of a ratio.
--For example, distance over time (60 miles per hour) or
Mass over distance (grams per meter), etc.

5. 2-variable conversions
Step 1: Write the number given to convert in the problem.
Step 2: Ignoring the bottom unit, convert the top unit as you have always done.
Step 3: Continue the multiplication, but now ignoring the top unit, convert the bottom unit.
Step 4: Finally, complete the multiplication as usual (multiply the top, multiply the bottom, then divide the two final numbers).

6. Helpful hints
1. This is one VERY long multiplication problem. This is NOT TWO multiplication problems.
2. Remember to include UNITS into your answer for full credit.
3. “per” means ratio/fraction line

7. Okay…let’s go!
Convert 60 miles per hour into inches per second.

8. practice
Convert 26.7 decimeters per liter into kilometers per gallon.

9. One more…
Convert 7.7 x1012 seconds per centigram into months per pound.